After some minor maintenance and lubrication, I've loaned my P1800E to a desparate friend. I drove it out to her and she drove me back home in it. On the return trip and after merging onto another highway, the overdrive refused to engage. Tried flipping it on and off a couple times. Eventually left it on. After about 3-4 miles it finally kicked on and stayed on.

I've driven the car on the same route many times since I bought it and expereinced a minor delay in the OD kicking on, nothing too serious - seemed to be related to the rpms. This new delay was way beyond the previous experiences. I'm told that it's working fine now - but the car is mainly seeing city use so the OD is not being used much.

What sort of problem could this indicate? Or was this just a fluke?

While I don't care much about the rusty-bondoed little monster, it's innards are destined for my 4-gear Amazon, so keeping the OD working properly is a priority.

Any advice is appredicated.

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1967 P220 Amazon, 1972 145S, 1976 245 DL, 1983 245 DL, 1986 745 GLE, 1990 745 GL, 1995 945....
You mean to tell me that Volvo makes cars that are *NOT* Wagons?!?
1971 P1800E... Not a wagon, but it's just a donor car for the Amazon..